ISO 10936-2:2010

Overview

ISO 10936-2:2010 - Optics and photonics - Operation microscopes - Part 2: Light hazard from operation microscopes used in ocular surgery specifies requirements and test methods for assessing optical radiation (light) hazards from surgical microscopes used in ophthalmic procedures. The standard defines how to classify instruments by risk, the test methods to determine that classification, and additional protections and manufacturer information required for devices that present a potential retinal hazard.

Key topics and technical requirements

• Scope and purpose: Address optical radiation hazards specifically for operation microscopes used in ocular surgery; complements general microscope requirements found in ISO 10936‑1.
• Classification: Instruments are assigned to Group 1 (no potential light hazard) or Group 2 (potential light hazard) as defined by ISO 15004‑2 test and classification criteria.
• Group 1: No further light-hazard requirements if classification criteria are met.
• Group 2 requirements:
  • Compliance with ISO 15004‑2:2007, Clause 5.3 is required.
  • A retinal protection device is mandated if the time to reach the aphakic-weighted retinal radiant exposure maximum is less than 30 minutes at maximum output. When enabled, this device must increase exposure time by a factor of at least 5 or raise it to ≥ 30 minutes.
  • The operational status of the protection device must be clearly evident to the user during surgery.
  • Stability of light intensity: Design and maintenance measures must prevent ageing, servicing, or component replacement from reducing exposure times below safe limits throughout the device lifetime (when maintained per manufacturer specs).
• Test methods and measurements: Test procedures are aligned with ISO 15004‑2 clauses (continuous and pulsed instruments, multi‑source instruments). Annex B provides an example fluid‑filled test eye for irradiance measurements; Annex A gives example user information for maximum exposure guidelines.
• Manufacturer information and marking: For Group 2 devices, manufacturers must provide exposure times (e.g., at maximum and 50% output) with and without the protection device in the user manual and make this information evident during surgery. Marking requirements refer to ISO 10936‑1.

Practical applications - who uses this standard

• Medical device manufacturers (design, verification, safety documentation)
• Test laboratories and compliance engineers performing optical radiation measurements
• Regulatory and quality teams preparing conformity evidence for ophthalmic microscopes
• Biomedical engineers and hospital procurement evaluating equipment safety features
• Risk managers and clinical users (surgeons, OR staff) relying on clear labeling and operational status of protection devices

Related standards

• ISO 10936‑1 - Operation microscopes: general requirements and test methods
• ISO 15004‑2:2007 - Ophthalmic instruments: fundamental requirements and test methods - Part 2: Light hazard protection (referenced extensively for classification and test methods)

Keywords: ISO 10936-2:2010, operation microscopes, ocular surgery, light hazard, ophthalmic surgery, retinal protection device, Group 1, Group 2, ISO 15004-2, fluid filled test eye.